KR20150034033A - Archive system using optical disc - Google Patents

Archive system using optical disc Download PDF

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Publication number
KR20150034033A
KR20150034033A KR20130114090A KR20130114090A KR20150034033A KR 20150034033 A KR20150034033 A KR 20150034033A KR 20130114090 A KR20130114090 A KR 20130114090A KR 20130114090 A KR20130114090 A KR 20130114090A KR 20150034033 A KR20150034033 A KR 20150034033A
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KR
South Korea
Prior art keywords
solenoid
optical disk
light receiving
light emitting
disk
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Application number
KR20130114090A
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Korean (ko)
Inventor
이석준
Original Assignee
주식회사 히타치엘지 데이터 스토리지 코리아
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Application filed by 주식회사 히타치엘지 데이터 스토리지 코리아 filed Critical 주식회사 히타치엘지 데이터 스토리지 코리아
Priority to KR20130114090A priority Critical patent/KR20150034033A/en
Publication of KR20150034033A publication Critical patent/KR20150034033A/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/22—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records
    • G11B17/225—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records wherein the disks are transferred from a fixed magazine to a fixed playing unit using a moving carriage
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/03—Containers for flat record carriers
    • G11B23/0301—Details
    • G11B23/0307—Positioning or centering features
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

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  • Automatic Disk Changers (AREA)

Abstract

The present invention relates to an optical disk based archive system. In the archive system according to the embodiment of the present invention, the picker robot moves the optical disc from the cartridge or disc drive to the center of the picker robot, moves the optical disc from the center of the picker robot to the disc drive or the cartridge, It is possible to provide a space for accommodating two optical disks in the body of the robot. The picker robot includes a kicker arm for pulling out the optical disc from the cartridge; First and second solenoid assemblies including at least one solenoid for dragging or pushing an optical disc drawn into the body; And first and second solenoid transferring parts for moving the first and second solenoid assemblies. The first solenoid assembly includes a light emitting array composed of a plurality of light emitting elements, and the second solenoid assembly includes a light receiving array composed of a plurality of light receiving elements disposed at positions corresponding to the light emitting elements. The second solenoid includes a first solenoid assembly And receive the light emitted by the light emitting array through the light receiving array. The control unit can obtain the positional information of the optical disk drawn into the body of the picker robot based on the signal received by the light receiving array.

Description

[0001] The present invention relates to an optical disc-based archive system,

The present invention relates to an optical disk-based archive system, and more particularly, to an apparatus for detecting an optical disk in a picker module that transfers an optical disk in an archive library system.

As video signal processing technology and data transmission technology are developed and large display devices are developed, viewers can view high-quality contents and the need to store high-capacity contents is increasing.

In recent years, cloud services have been enabled to put data on remote servers and use data anywhere on the network, and the storage capacity that cloud services provide to individuals is also growing.

In this way, a portal providing cloud service, a broadcasting station providing a large amount of contents, a large server for storing and managing a large amount of data in a library, a government office, or a bank in which a large amount of documents must be archived and stored The need is increasing. In accordance with this necessity, an archive system that can store and retrieve a large amount of data reliably at a low cost and quickly is being launched.

Archiving system is a kind of database which maintains and maintains the relation between data and keeps the collection and data of digital information in the form of digital information. It digitizes information that may be degraded or dispersed over time, And so on. It is meaningful not to simply accumulate information, but to organize and accumulate information effectively in various ways.

Up until now, archival systems have been the mainstay of tapes as storage media. However, a tape-based archive system has the problem of high data stability but low search speed and large space. Hard disk-based archive systems are also emerging and are excellent in that they can be searched quickly, but data reliability is poor.

In recent years, an archive system using an optical disk as a storage medium has emerged. An optical disk-based archive system can search more quickly than a tape-based archive system and can store data more reliably than a hard disk-based archive system There is an advantage that the space occupied by the tape and the hard disk can be reduced.

An optical disc-based archive system includes a cartridge for storing a plurality of optical discs, an optical disc drive for recording data on the optical disc or reading data from the optical disc, and an optical disc between the cartridge and the optical disc drive A picker module (or a picker robot) as a transporting device for transferring is separately provided to horizontally move the optical disc taken out from the cartridge, loads the optical disc into the optical disc drive, and reads / writes the data from / And then moved horizontally and then drawn into the cartridge.

Figure 1 shows an optical disk based archive system.

The optical disc based archive system 100 mainly includes a drive bay 10 in which a plurality of optical disc drives ODD are installed, a picker robot 20 for moving the optical disc, a cartridge for storing a plurality of optical discs A robot transferring unit 40 for driving and guiding the picker robot 20 to move between the drive bay 10 and the cartridge 30, a plurality of cooling A fan module 50 equipped with a fan, and the like.

The drive bay 10 and the cartridge 30 are arranged symmetrically and the guide of the robot transfer section 140 is installed between the left and right drive bays 10 and the left and right cartridges 30, It is possible to move between the left and right drive bay 10 and the cartridge 30 along the longitudinal direction of the cartridge 30. [

For example, three optical disc drives can be installed in the drive bay 10, so that up to six optical discs can be loaded in the left and right drive bays to perform data recording or data reading operations at the same time.

The cartridge 30 can store, for example, 250 optical discs, so that up to 500 optical discs can be stored in the left and right cartridges 30 provided on both sides of the picker robot 20, Can be separated from the archive system. The cartridge 30 has a large space behind the cartridge disk rack in the shape of an open back so that the picker robot 20 has sufficient penetration space to push the optical disk into the body of the picker robot 20.

2 shows a mechanism for transferring an optical disc in two directions in an optical disc-based archive system.

2, the optical disc-based archive system 100 includes an X-directional optical disk drive (not shown) for loading / unloading (or loading / unloading) an optical disk into / from the optical disk drive or cartridge 30 of the drive bay 10 And transport in the Y direction for transporting and transporting the optical disk in the disk handling assembly, which is the body of the picker robot 20.

The Y directional transfer is performed by moving the optical disk contained in the disk handling assembly of the picker robot 20 to a desired optical disk drive in the drive bay 10 and a picker robot 20 The picker robot 20 is moved along a guide provided at the center between the left and right drive bays 10 and the left and right cartridges 30.

The guide may include a robot feed screw 41 for driving the picker robot 20 back and forth and a robot feed motor 42 for rotating the robot feed screw 41. The picker robot 20 May include a connection structure connected to the bones or mountains of the screw 41 to convert the rotational motion of the screw 41 into a linear motion in the Y direction.

The movement in the X direction is performed by an unloading mechanism in the optical disk drive of the drive bay 10, a rotational movement of the picker arm of the picker robot 20, and an actuator drive included in the disk handling assembly, A cartridge 30, and a device for moving the optical disk in the X direction in the disk handling assembly.

The picker robot 20 moves in the X direction through an actuator included in a kicker arm and a disk handling assembly for moving a disk in the cartridge 30 into a disk handling assembly that is a body, And a plurality of light receiving elements such as a light emitting element are disposed in two printed circuit boards (PCBs) facing each other, and are moved in the X direction in the disk handling assembly or placed in the disk handling assembly As shown in FIG.

The disk handling assembly for holding an optical disk in the picker robot 20 provides a space for accommodating two optical disks and includes two devices to prepare for a failure. The same number of light receiving elements as the light emitting elements are disposed.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to acquire position information of an optical disk using a small number of sensors in a picker robot of an optical disk based archive system.

Another object of the present invention is to realize a picker robot in a simple structure in an optical disc-based archive system.

According to an aspect of the present invention, there is provided an archive system comprising: a drive bay including a plurality of disk drives for recording data on an optical disk or reading data recorded on the optical disk; A cartridge for storing a plurality of optical disks; Picker robot; A robot transfer unit for moving the picker robot between the drive bay and the cartridge; And a control unit for controlling each component so as to transfer the optical disk stored in the cartridge to the disk drive via the picker robot and to transfer the optical disk in the disk drive to the cartridge via the picker robot , The picker robot moves the optical disc from the cartridge or disc drive to the center of the picker robot and moves the optical disc from the center of the picker robot to the disc drive or the cartridge, Wherein the picker robot comprises: a kicker arm for pulling out the optical disc from the cartridge; First and second solenoid assemblies including at least one solenoid for dragging or pushing an optical disc drawn into the body; And a first and a second solenoid transporting unit for moving the first and second solenoid assemblies, wherein the first solenoid assembly includes a light emitting array composed of a plurality of light emitting devices, Wherein the first solenoid assembly moves in synchronism with the first solenoid assembly and receives light emitted from the light emitting array through the light receiving array, the light receiving array including a plurality of light receiving elements disposed at positions corresponding to the light emitting elements, And the control unit obtains positional information of the optical disk drawn into the body of the picker robot based on the signal received by the light receiving array.

In one embodiment, the light emitting array and the light receiving array may be arranged in a straight line in a first direction in which the solenoid assembly moves and in a third direction perpendicular to the second direction in which the picker robot moves.

In one embodiment, the solenoid assembly includes two solenoids arranged in a direction in which the solenoid assembly moves, and the light emitting array and the light receiving array may be disposed between the two solenoids with respect to the first direction.

In one embodiment, the solenoid assembly includes two solenoids arranged in a direction in which the solenoid assembly moves, the first solenoid assembly including a first light emitting array and a second light emitting array or a first light emitting array and a second light receiving array And the second solenoid assembly may include a first light receiving array and a second light receiving array or a first light receiving array and a second light emitting array.

In one embodiment, the light emitting array and the light receiving array may be arranged in a range from the outer periphery of the center hole of the optical disk drawn into the body with respect to the third direction to the edge of the optical disk.

In one embodiment, shielding means having perforations at positions corresponding to the plurality of light-receiving elements may be disposed on the front surface of the light-receiving array.

In one embodiment, when the optical disk enters the body of the picker robot, the control unit controls the first and second solenoid conveying units to move the first and second solenoid assemblies toward the slot in which the optical disk is received The position of the optical disc can be detected through the light emitting array and the light receiving array.

In one embodiment, the control unit calculates the position of the center hole of the optical disk and controls the solenoid feed unit so that the solenoid, which is close to the slot in which the optical disk is received in the solenoid assembly, aligns with the center hole. .

In one embodiment, when the optical disk in the body of the picker robot is ejected to the disk drive or the cartridge, the control unit controls the solenoid, which is close to the slot for ejecting the optical disk from the solenoid assembly close to the optical disk, So that the first and second solenoid assemblies are moved in the direction in which the first and second solenoid assemblies are to eject the optical disk, so that the end portions of the solenoids protrude through the center hole of the optical disk, The first and second solenoid assemblies are moved in a direction opposite to a direction in which the first and second solenoid assemblies attempt to eject the optical disk by turning off the solenoid to prevent the end portions from contacting the optical disk, The position of the optical disk is checked while moving When the first and second solenoid assemblies are moved to the outside of the optical disc, the solenoid is turned on so that the end portions protrude to interfere with the optical disc, and the first and second solenoid transporting units are controlled The first and second solenoid assemblies may move in a direction in which the optical disk is to be ejected so that the end portion pushes the optical disk to allow the optical disk to exit the body.

In one embodiment, the solenoid conveying portion includes a step motor, a gear, a screw, and a guide, and the controller can determine the position of the solenoid assembly through the number of steps applied to the step motor.

Accordingly, it is possible to detect the position of the optical disk in the disk handling assembly of the picker robot by applying a small number of light emitting elements and light receiving elements.

Further, in order to recognize two optical discs in the body of the picker robot, the light emitting element and the light receiving element can omit the dagger board provided on the front surface and the rear surface, thereby simplifying the structure of the picker robot.

Figure 1 illustrates an optical disk based archive system,
2 shows a mechanism for transferring an optical disc in two directions in an optical disc-based archive system,
3 shows a structure of a picker robot for moving an optical disc to a cartridge and a drive in an optical disc-based archive system,
4 shows an embodiment of controlling the position of a picker robot using a position sensor in an optical disk based archive system,
5 is a top view of the disk handling assembly of the picker robot. FIG. 5 shows a configuration in which a plurality of light emitting devices and a light receiving device are disposed on two PCBs and a dagger board positioned between the two PCBs,
6 shows a configuration in which a plurality of light emitting devices or light receiving devices are arranged on a PCB or a dagger board,
7 is a view showing a state in which when the optical disk is pulled from the cartridge to the disk handling assembly of the picker robot, the light receiving element of the dagger board placed between the two PCBs is used to detect the position of the incoming optical disk and to move the solenoid FIG.
8 is a view showing an operating state of a solenoid of a solenoid assembly driven to draw in or out the optical disk into the disk handling assembly of the picker robot,
9 shows a process of controlling the solenoid to detect the position of the optical disk drawn out by using the light receiving element of the dagger board and to move the optical disk when the optical disk is taken out from the disk handling assembly of the picker robot to the cartridge And,
10 illustrates a solenoid assembly in which a light emitting element and a light receiving element array are arranged according to an embodiment of the present invention,
11 is a side view of a disk handling assembly employing a solenoid assembly having a light emitting device and a light receiving device array according to an embodiment of the present invention,
FIG. 12 is a view showing the detection of the position of the disk while the pair of solenoid assemblies according to the embodiment of the present invention moves in synchronism,
FIG. 13 is a view showing a result of detection of movement of a pair of solenoid assemblies in synchronism with a scan range according to a position of a disk according to an embodiment of the present invention,
14 shows the structure of a functional block of an optical disc based archive system.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an optical disk based archive system according to the present invention will be described in detail with reference to the accompanying drawings.

In the optical disc-based archive system, a plurality of optical discs are stored in left and right cartridges, and a picker robot moving between the right and left cartridges removes the optical disc from the cartridge, And then the optical disk is loaded on the optical disk drive or unloaded from the optical disk drive and then moved to a state fixed on the body of the picker robot and put back into the cartridge, Or reads data from the optical disc.

First, a picker robot for transferring an optical disk in an optical disk-based archive system transfers an optical disk in the X direction and describes an element for measuring the position of the optical disk and a measuring method thereof.

3 shows a structure of a picker robot for moving an optical disc to a cartridge and a drive in an optical disc-based archive system.

The picker robot 20 fixes the optical disk drawn out from the cartridge 30 or the drive bay 10 at the center of the picker robot 20 and moves along the guide of the robot transfer section and moves to the drive bay 10 A disc handling assembly 21 for loading the optical disc with the cartridge 30, a kicker arm 22 for withdrawing an optical disc from the cartridge 30, A main frame 23 having a shoulder shape for prolonged installation, a kicker arm driving motor 24 for driving the kicker arm 22, and a position encoder 25 for detecting the position in the Y direction of the picker robot 20 ), And the like.

The disk handling assembly 21 is provided with a device for connecting the picker robot 20 to a guide so as to move along the guide of the robot transferring unit 40. Two slots for receiving two optical disks Both sides are provided. The disc handling assembly 21 is also provided with an optical disc drive mechanism for moving the optical disc that is drawn into the slot of the disc handling assembly 21 to stay in a safe position in the center of the disc handling assembly 21, Two solenoid assemblies 216_1 and 216_2 for moving the optical disc staying in the center to the disc drive of the drive bay 10 or the cartridge 30 through the slot are provided.

Each solenoid assembly 216 includes two left and right solenoids 217_L and 217_R and a solenoid PCB 218 for controlling the left and right solenoids. The solenoid assembly 216 moves in the X- The solenoid assembly 216 receives the driving force from the solenoid feed motor 211 and moves in the X direction.

The disk handling assembly 21 is provided with two sled boards 212 212_1 and 212_2 for controlling the solenoid feed motor 211. The position of the optical disk is set in each sled board 212 A plurality of light emitting devices 214 are provided. An intermediate board (or a dagger board) 213 is provided between the two sled boards 212_1 and 212_2 and a plurality of light emitting elements 214 provided on the two sled boards 212 on both sides of the intermediate board. A plurality of light receiving elements 215 may be provided at positions corresponding to the light emitting devices 214 to determine the position of the optical disc depending on whether or not the light enters from the light emitting device 214 at the corresponding position.

Before transferring the optical disc in the X direction through the disc handling assembly 21, the transfer of the picker robot 20 in the Y direction will be described.

4 shows an embodiment of controlling the position of a picker robot using a position sensor in an optical disk based archive system,

As shown in FIG. 4, the picker robot 20 is moved by the closed loop control system so that the picker robot 20 can move to a position relative to the disk slot of the cartridge 30 to which the optical disk is to be pulled. A plurality of holes are formed in a straight line in the left and right cartridges 30 along the movement path. The fine holes Hole_F and the coarse holes Hole_C, Are formed side by side in parallel. The fine holes are formed at narrow intervals in order to precisely detect the moving position of the picker robot, and the course holes are formed at wide intervals in order to detect the moving position of the picker robot approximately and quickly.

The picker robot 20 is provided with sensor units 251 and 252 in which a plurality of sensors including a light emitting unit for emitting light toward the hole and a light receiving element for receiving light transmitted through the hole are arranged, And two on the right side. For example, two fine hole sensors composed of a light emitting portion and a light receiving element are arranged in one sensor portion 251 to detect the fine holes, and another sensor portion 252 is provided with a light emitting portion And two course hall sensors constituted by a light receiving element and a light receiving element can be arranged.

The picker robot 20 is accurately positioned at the position of the slot included in the cartridge 30 on the basis of a signal output by the sensor units 251 and 252 as the picker robot 20 moves in the Y direction The optical disk can be inserted or extracted.

FIG. 5 is a top view of the disk handling assembly of the picker robot. FIG. 5 shows a configuration in which a plurality of light emitting devices and a light receiving device are disposed on two sled PCBs and a dagger board positioned in the middle.

A plurality of light emitting devices 214_1 and 214_2 are disposed on the first sled board 212_1 and a second sled board 212_2 and a plurality of light emitting devices 214_1 and 214_2 are disposed on the middle board 213 between the two sled boards 212_1 and 212_2. On both sides, a plurality of light receiving elements 215_1 and 215_2 are disposed at positions corresponding to the plurality of light emitting devices 214_1 and 214_2. The slot of the disk handling assembly 21 is provided between the first sled board 212_1 and the middle board 213 and between the second sled board 212_2 and the middle board 213, The optical disc enters between the first or second sled boards 212_1 and 212_2 and the intermediate board 213 to prevent the light emitted from the light emitting element 213 from entering the corresponding light receiving element 215 , The position of the optical disc can be determined based on the signals detected by the plurality of light receiving elements 215. [

6 shows a configuration in which a plurality of light emitting devices or light receiving devices are disposed on a PCB or a dagger board. Based on signals detected by the plurality of light receiving devices 215, an optical disk is mounted on the disk handling assembly 21 A plurality of light emitting devices 214 or a plurality of light receiving devices 215 may be arranged as shown in FIG.

7 is a view showing a state in which when the optical disk is pulled from the cartridge to the disk handling assembly of the picker robot, the light receiving element of the dagger board placed between the two PCBs is used to detect the position of the incoming optical disk and to move the solenoid FIG.

7, the solenoid assembly 216 is positioned at the center of the disk handling assembly 21 and the left and right solenoids 217_L and 217_R are in the off state to be.

8 shows the operation state of the solenoid of the solenoid assembly driven to draw in or out the optical disk into the disk handling assembly of the picker robot. When the solenoid 217 is off, the solenoid 217 is turned on, (Circular column shape having a diameter smaller than that of the central hole) corresponding to the center hole of the optical disk does not protrude but comes back to the state where it does not interfere with or impinge on the optical disk, and when the solenoid 217 is in the ON state The end portion is protruded so as to pass through the center hole of the optical disk, and the end portion protrudes through the center hole of the optical disk to move the optical disk while the solenoid assembly 216 moves in the X direction Or the end portion protrudes outside the optical disk, so that the solenoid assembly 216 moves, It is possible to draw the optical disk by sliding the edge of the cartridge 30 or the disk drive.

7, when the kicker arm 22 swings to draw the optical disk in the cartridge 30 through the slot of the disk handling assembly 21, a plurality (two or more) of the plurality of The light receiving elements 215 of the light receiving elements 215_1 and 215_2 corresponding to the slot into which the optical disk is inserted (or the swinging kicker arm 22) are connected to the sled PCB 212 And the position of the optical disc in the disc handling assembly 21 can be determined on the basis of the detected light.

The swinging of the kicker arm 22 causes the optical disk to enter the inside of the disk handling assembly 21 and the center hole of the optical disk The power is transmitted through a link element (for example, a gear, a screw, or the like) that drives the solenoid feed motor 211 and connects the solenoid feed motor 211 and the solenoid assembly 216, so that the solenoid assembly 216 The solenoid assembly 216 is moved to a position where the solenoid 217 in the swing direction of the kicker arm 22 is aligned with the center hole of the optical disk among the two solenoids 217_L and 217_R.

7, when the right solenoid 217_R is turned on and the end of the solenoid protrudes to pass through the center hole of the optical disk, the solenoid feed motor 211 is driven in the opposite direction, The optical disc is placed at the center of the disc handling assembly 21 as shown in the third drawing from above.

When the right solenoid 217_R is driven to be in the ON state and the end portion protrudes but does not pass through the center hole of the optical disk, it is determined that the solenoid assembly 216 is not properly aligned, and the solenoid feed motor 211 is driven again The position of the solenoid assembly 216 can be rearranged.

Whether or not the end of the solenoid 217 passes through the center hole can be confirmed through a sensor provided on the solenoid 217. The sensor in the solenoid 217 senses the degree of protrusion of the end portion and the solenoid 217 is turned on It is possible to identify the two states, that is, the state in which the end portion completely protrudes (the state in which the end portion passes through the center hole of the optical disk or the portion protrudes from the outer side of the optical disk) and the state in which the end portion does not completely protrude from the optical disk. If the end of the solenoid 217 does not fully protrude, the solenoid assembly 216 must be repositioned.

9 shows a process of controlling the solenoid to detect the position of the optical disk drawn out by using the light receiving element of the dagger board and to move the optical disk when the optical disk is taken out from the disk handling assembly of the picker robot to the cartridge will be.

When the optical disk is taken out to the disk drive of the right cartridge 30 or the drive bay 10 while the optical disk is placed in the center of the disk handling assembly 21 a plurality of light receiving elements 215 And drives the solenoid feed motor 211 so that the right assembly 217_R of the solenoid assembly 216 aligns with the center hole of the optical disc and the right assembly 217_R is turned on So that the end portion passes through the center hole of the optical disk.

The solenoid feed motor 211 is driven so that the solenoid assembly 216 moves to the right and the rotational force of the solenoid feed motor 211 is transmitted to the optical disk through the link element and the end of the solenoid assembly 216, When the right solenoid 217_R is moved to the end of the disk handling assembly 21, the center hole of the optical disk is moved to the slot entrance of the disk handling assembly 21.

Thereafter, the right solenoid 217_R is turned off so that the end of the solenoid is removed from the center hole of the optical disk, and the solenoid assembly 216 is moved to the left so that the right solenoid 217_R is positioned outside the optical disk. The right solenoid 217_R is turned on so that the end of the solenoid completely protrudes from the outside of the optical disk and the solenoid feed motor 211 is driven so that the protruding end pushes the optical disk to the right, So that the disc completely falls out of the disc handling assembly 21.

In the present invention, in order to reduce the number of the light emitting elements 214 and the light receiving elements 215 disposed on the two sled PCB 212 and the intermediate board 213, the intermediate board on which the light receiving elements 215 are disposed is removed A plurality of light emitting elements (light emitting element arrays) and a corresponding number of light receiving elements (light receiving element arrays) are connected to the two solenoid assemblies 216 for transferring the optical disk, without arranging the light emitting elements on the sled PCB 212 And the two solenoid assemblies 216 are moved synchronously to obtain positional information of the optical disk.

FIG. 10 illustrates a solenoid assembly in which a light emitting device and a light receiving device array are disposed according to an embodiment of the present invention, as compared with a conventional solenoid assembly.

As described above, the solenoid assembly 217 receives driving force from a solenoid feed motor 211 through a link element such as a gear or a screw, moves in the X direction, and drives the left and right solenoids 217_L and 217_R The end portion protrudes to penetrate the center hole of the optical disk to move the optical disk in the X direction or push the edge of the optical disk to pull the optical disk out of the disk handling assembly 21. [

The conventional solenoid assembly 217 receives the rotational force of the solenoid feed motor 211 through the solenoid feed screw 219 and undergoes a linear motion in the X direction under the guidance of the solenoid feed guide 220 and drives the two solenoids 217 ) To transfer the optical disc to the left cartridge 30 or disc drive or to the right cartridge 30 or disc drive.

The solenoid assembly 217 according to the present invention may further include an array of light emitting devices 221 and an array of light receiving devices 222 for detecting the position of the disk in addition to the configuration of the conventional solenoid assembly 216. The array of light emitting devices 221 and the array of light receiving devices 222 are mounted in a line on a solenoid PCB 218. The array of light emitting devices 221 and the array of light receiving devices 222 are arranged in a radial direction from the outer periphery of the center hole of the optical disk toward the edge of the optical disk, A plurality of optical axes may be arranged in the range from the outer periphery of the center hole of the optical disk to the edge of the optical disk linearly in the direction perpendicular to both the X direction in which the picker robot 21 moves and the Y direction in which the picker robot 21 moves.

The two solenoid assemblies 216 are paired with each other and an array of light emitting devices 221 and an array of light receiving devices 222 are disposed at corresponding positions so that the light emitting devices 221 disposed in the first solenoid assembly 216_1 The output light can be detected by the array of light receiving elements 222 disposed in the second solenoid assembly 216_2.

Only two rows of light emitting devices 221 may be disposed in the first solenoid assembly 216_1 and only two rows of the light receiving devices 222 may be disposed in the second solenoid assembly 216_2. Instead of arranging two rows of light emitting elements 221, two rows of light receiving elements 222 or one row of light emitting elements 221 and one row of light receiving elements 222 in each solenoid assembly 216, the first solenoid assembly (Or only the light receiving element 222) is disposed in the second solenoid assembly 216_2 and only one row of the light receiving element 222 (or only the light emitting element 221) is disposed in the second solenoid assembly 216_2 You may. And may be disposed at the center of the solenoid PCB 218 when only one row of the light emitting devices 221 (or only the light receiving devices 222) is disposed in the solenoid assembly 216.

Only a portion where the light emitting element 221 or the light receiving element 222 is arranged is opened in the front face of the array of light emitting elements 221 or the array of light receiving elements 222 so that the light emitted from the light emitting elements 221 can be straightened Closed shielding means may be provided to reduce the crosstalk caused by light emitted from the other light emitting device 221 not responding or light reflected from the surface of the PCB, and the detection accuracy can be improved. Also, the light emitting element 221 may be an IR LED, which can be modulated to have a luminance that reduces crosstalk, increases resolution, increases lifetime, and saves power.

11 is a side view of a disk handling assembly employing a solenoid assembly in which a light emitting element array and a light receiving element array are arranged according to an embodiment of the present invention.

A solenoid feed motor 211 is mounted on the outer surface of the sled PCB 212 and the rotational force of the solenoid feed motor 211 is transmitted to the solenoid feed screw 219 through a gear, The solenoid assembly 216 is guided by the solenoid conveying guide 220 in accordance with the rotational motion of the solenoid conveying screw 219 and moves in the X direction in which the optical disk is drawn in or drawn out.

The solenoid feed motor 211, the solenoid feed screw 219, and the solenoid feed guide 220 may be referred to as a solenoid feed unit.

A method of converting the rotational force of the solenoid feed motor 211 into the linear motion of the solenoid assembly 216 can be performed not only by using a screw but also by a combination of a gear and a belt.

The distance or position of the movement of the solenoid assembly 216 in the X direction may be sensed through a separate sensor, or the number of steps applied by applying a stepping motor to the solenoid feed motor 211, In the latter case, when the power is applied or initialized, the solenoid feed motor 211 is controlled so that the solenoid assembly 216 is moved to the initial position (by the stopper or the like so that the solenoid assembly 216 is no longer moved) And the moving distance or position of the solenoid assembly 216 can be known by the number and direction of the steps to be applied.

In Fig. 11, the right solenoid 217_R of the left first solenoid assembly 216_1 is turned on, the end thereof protrudes through the center hole of the optical disk, and the right second solenoid assembly 216_2 The light emitted from the array of light emitting devices 221 of the first solenoid assembly 216_1 is received by the light receiving device 222 at the corresponding position of the second solenoid assembly 216_2, Can be detected in the array.

FIG. 12 illustrates the detection of the position of a disk while a pair of solenoid assemblies according to an embodiment of the present invention is moved synchronously.

For example, the two solenoid assemblies 216_1 and 216_2 may receive light emitted from the array of light emitting devices 221 of the first solenoid assembly 216_1 so that the array of light receiving devices 222 of the second solenoid assembly 216_2 may receive the light. The same drive signal is applied to the solenoid feed motor 211_1 mounted on the first sled PCB 212_1 and the solenoid feed motor 211_2 mounted on the second sled PCB 212_2 .

FIG. 13 is a view showing the result of detection of the movement of the scan range in synchronism with the pair of the solenoid assemblies according to the embodiment of the present invention, by the position of the disk.

The right solenoid 217_R of the solenoid assembly 216 can move in the X direction to the left and right slot inlets of the optical disc in the disc handling assembly 21, To the left until the right solenoid 217_L of the solenoid assembly 216 touches the left slot entrance of the disk handling assembly 21. The left solenoid 217_L of the solenoid assembly 216 can be moved to the left until it touches the right slot entrance of the assembly 21,

When the optical disk is not drawn into the disk handling assembly 21, all of the solenoid assemblies 216_1 and 216_2 are scanned by the scan of the pair of solenoid assemblies 216_1 and 216_2, All receiving elements 222 receive light.

When a portion of the optical disk is drawn through the slot as the kicker arm 22 of the disk handling assembly 21 is driven, the first solenoid assembly 216_1 and the second solenoid assembly 216_2 pair scan within the scan range The receiving element 222 located at a position corresponding to the area occupied by the optical disk does not receive the light, and a scan result including the arc shape of the edge of the optical disk is obtained as shown in FIG.

When the optical disk is moved to the center of the disk handling assembly 21, when the first solenoid assembly 216_1 and the second solenoid assembly 216_2 are scanned within the scan range, they are positioned at a position corresponding to the area occupied by the optical disk The receiving element 222 can not receive light, and the scan result as in the third example of FIG. 7 is obtained.

In this manner, the edge arc shape of the optical disk, that is, the area on which the optical disk is placed is identified through the scan result obtained while moving the pair of solenoid assemblies 216 within the scan range, and the position of the center hole of the optical disk is calculated, The solenoid assembly 216 is moved so that the near solenoid 217 aligns with the center hole so that the end of the solenoid 217 passes through the center hole of the optical disk and the solenoid 217 passes through the center hole The solenoid assembly 216 is moved until the optical disk is in the center of the disk handling assembly 21. Thereafter, the solenoid 217 on which the optical disk is moved may be turned off, and the pair of the solenoid assemblies 216 may be scanned while moving within the scan range to confirm whether the optical disk is placed in the center of the disk handling assembly 21.

When the right kicker arm 22 is driven to draw the optical disk through the right slot, the pair of solenoid assemblies 216 are first moved to the left and moved from left to right to scan the optical disk, And the solenoid assembly 216 corresponding to the slot into which the optical disc is inserted is moved so that the right solenoid 217_R is aligned with the calculated center hole of the optical disc. That is, the scanning order can be changed according to the direction in which the optical disk is inserted, thereby reducing the distance by which the solenoid assembly 216 is moved.

When the optical disk is taken out from the disk handling assembly 21 to the cartridge 30 or the disk drive, the direction in which the optical disk is drawn out is first checked. For example, when the optical disk is taken out through the right slot, The pairs are moved to the right end of the scan range and then moved to the left side to operate the array of light emitting devices 221 and the array of light receiving devices 222 to detect the precise position of the optical disc through the signal received from the array of light receiving devices 222, The solenoid assembly 216 is moved to the right so that the right solenoid 217_R is aligned with the center hole and the right solenoid 217_R is turned on after alignment so that the end passes through the center hole, And again moves the solenoid assembly 216 to the right end of the scan range. Thereafter, the right solenoid 217_R is turned off to separate the solenoid 217 and the optical disk, the solenoid assembly 216 is moved to the left so that the right solenoid 217_R is positioned outside the optical disc, and the right solenoid 217_R is again moved The solenoid assembly 216 is moved to the right end of the scan range so that the protruding end pushes the optical disc out of the slot.

FIG. 14 shows a configuration of a functional block of an optical disc-based archive system, and shows only a configuration of a block necessary for transferring a disk in the archive system.

The optical disc-based archive system includes a drive bay 10 for recording and reading data, a picker robot 20 for transporting the optical disc in the X direction and transporting in the Y direction, a cartridge for storing a plurality of optical discs 30, a robot feeder 40 for driving the picker robot 20 to move in the Y direction and guiding movement, and a processor, memory, operating system (OS), custom program code and hardware, And a single board computer (SBC) 60 serving as a controller for commanding or controlling other hardware.

The picker robot 20 may further include a picker flash for storing a position error in the Y direction of the picker robot, and the cartridge 30 further includes a cartridge flash for storing a positional error of each slot in the cartridge And the robot transferring unit 40 may include a robot transferring motor 42 for rotating the robot transferring screw 41 in order to transfer the picker robot 120 in the Y direction.

The single board computer (SBC) 60 plays a role of recording or reading data to be archived or archived data by using an optical disk drive in connection with an archive server. In other words, it communicates with the system server through Gigabit Ethernet to receive commands, control and data, and interprets the information in the job task in the archive system, for example, disk movement, communication with the drive, Controls the picker robot 20 and the optical disk drive, processes requests for data access and storage, and instructs the picker robot 20 to select an appropriate disk and load it into a suitable drive.

The cartridge flash is used to store metadata about the optical disc in the cartridge 30, which includes a list listing what is in each slot of the cartridge 30, a volume identifier for each disc, and a rewritable It may contain a simple history of the disk including the number of times and the number of errors.

A process of loading an optical disc stored in a slot of the cartridge 40 into the optical disc drive of the drive bay 10 will be described.

When the archive system 100 is turned on, the single board computer 60 reads data stored in the picker flash and the cartridge flash and stores the data in an internal memory (not shown).

The single board computer 160 identifies the slot (target slot) of the cartridge 30 in which the disk to be loaded in the optical disk drive is stored based on the data read from the cartridge flash, The picker robot 20 moves according to the rotation of the screw 41 by driving the robot feed motor 42 to rotate the robot feed screw 41. The encoder 25 of the picker robot 20 drives the picker robot 20, Moves to the target slot while confirming the position of the current picker robot 20 from the fine holes and course holes formed in the picker 30.

The single board computer 60 controls the picker robot 20 so that the target slot of the cartridge 30 is aligned with the target slot of the picker robot 20 by the signal of the encoder 25, The optical disk stored in the slot is moved to the disk handling assembly 21. The kicker arm 22 is rotated by the rotational force of the step motor 24 of the picker robot 20 to roll the optical disk being stored in the target slot The solenoid assembly 216 inside the disk handling assembly 21 moves the optical disk to the center of the disk handling assembly 21. The optical disk is then moved to the center of the disk handling assembly 21. [

When the optical disc enters the slot of the picker robot 20 by the rotation of the kicker arm 22, the single board computer 60 drives the solenoid feed motor 211 to drive the solenoid assembly 216 ) Pairs are moved to a slot opposite to the slot in which the optical disk is inserted and then the pair of the solenoid assemblies 216 are moved in synchronism with each other toward the slot in which the optical disk is inserted, so that the array of light emitting devices 221 and the array of light receiving devices 222 And detects the position of the optical disk.

Alternatively, the pair of solenoid assemblies 216 may move toward the slot closer to the kicker arm 22 when the kicker arm 22 starts to rotate to drive the array of light emitting devices 221 and the array of light receiving devices 222 And checks the area occupied by the optical disk after a predetermined time (waiting until the disk stops) after the optical disk starts to be inserted into the slot, It is possible to calculate the position of the optical disc and the position of the center hole after passing through the edge of the optical disc.

After the positions of the optical disc and the center hole are calculated, the solenoid assembly 216 moves to the center hole of the optical disc again so that the solenoid 217 near the center hole of the optical disc aligns with the center hole, When the end portion protrudes, moves toward the center of the disk handling assembly 21 so that the center hole of the optical disk 21 is placed in the center of the disk handling assembly 21 .

The single board computer 60 receives the signals detected by the array of light receiving elements 222 while moving the pair of solenoid assemblies 216, calculates the position of the optical disk based on the received signals, The solenoid 217 of the solenoid assembly 216 may be aligned with the center hole of the optical disc by controlling the motor 211. [

Thereafter, the single board computer 60 drives the robot feed motor 42 to rotate the robot feed screw 41 so that the optical disk of the picker robot 21 is aligned with the slot of the target disk drive And drives the solenoid feed motor 211 to move the solenoid assembly 216 toward the target disc drive so that the protruding end of the solenoid 217 in the ON state enters the slot of the target disc drive do.

The single board computer 60 turns off the corresponding solenoid 217 so that the end portion of the solenoid 217 is separated from the center hole of the optical disk and drives the solenoid feed motor 211 to move the solenoid assembly 216 to the disk handling assembly When the solenoid assembly 216 moves away from the edge of the optical disc, the corresponding solenoid 217 is turned on so that the end portion protrudes, and then the solenoid feed motor 211 is moved And drives the solenoid assembly 216 to move toward the optical disk so that the protruding end pushes the optical disk so that the optical disk completely enters the slot of the target disk drive.

The disk drive can hold the optical disk by gripping the optical disk into the disk drive and fixing it to the clamp when the optical disk enters the slot to some extent. Since the slot of the optical disk drive is relatively wide, there is no serious problem in moving the optical disk in the X direction in a state aligned with the slot of the picker robot 20. [

For example, when moving from the right cartridge 30_R to the disk drive of the right drive bay 10_R, only the right assembly 217_R of the solenoid assembly 216 is used to move the optical disc from the cartridge 30 to the disc handling assembly 21 and also from the center of the disk handling assembly 21 to the disk drive.

However, when moving the optical disc from the right cartridge 30_R to the disc drive of the left drive bay 10_L and moving the optical disc from the cartridge 30 to the center of the disc handling assembly 21, the solenoid assembly 216, It may be necessary to use at least the left assembly 217_L of the solenoid assembly 216 to move the disk assembly from the center of the disk handling assembly 21 to the disk drive using the right assembly 217_R of the solenoid assembly 216. [

The unloading process for moving and storing the optical disc in which data recording or data reading has been completed in the disc drive of the drive bay 10 to the target slot of the cartridge 40 is performed in the reverse order to the loading process described above. It is omitted.

When the optical disk in the disk drive is moved to the inside of the disk handling assembly 21 which is the body of the picker robot 20 by the pulling operation of the disk drive without driving the kicker arm 22, And then the optical disc can be moved to the center of the disc handling assembly 21 by the operation of the solenoid assembly 216. [

In a case where two rows of light emitting devices 221, two rows of light receiving devices 222 or one row of light emitting devices 221 and one row of light receiving devices 222 are arranged in the solenoid assembly 216, 60 may calculate the disc position precisely using all of the two rows or may use only one array of light emitting devices 221 and one array of light receiving devices 222 related to the moving direction of the optical disc. In addition, the light emitting / receiving element array to be used may be changed according to the moving direction of the solenoid assembly 216. When the solenoid assembly 216 moves to the right, the light emitting / When the solenoid assembly 216 moves to the left, the moving range of the solenoid assembly 216 may be reduced by using the light emitting / receiving element array disposed on the left side.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. Addition or the like.

10: Drive bay 20: Picker robot
21: disk handling assembly 22: kicker arm
23: Frame 24: kicker arm drive motor
25: Encoder 30: Cartridge
40: robot transfer part 41: robot transfer screw
42: robot feed motor 50: fan module
60: Single Board Computer 100: Archive System
211: Solenoid feed motor 212: Sled PCB
213: intermediate board 214: light emitting element
215: light receiving element 216: solenoid assembly
217: Solenoid 218: Solenoid PCB
219: Solenoid feed screw 220: Solenoid feed guide
221: light emitting element 222: light receiving element
251, 252:

Claims (10)

A drive bay including a plurality of disk drives for recording data on an optical disk or for reading data recorded on the optical disk; A cartridge for storing a plurality of optical disks; Picker robot; A robot transfer unit for moving the picker robot between the drive bay and the cartridge; And a control unit for controlling each component to transfer the optical disk stored in the cartridge to the disk drive via the picker robot and to transfer the optical disk in the disk drive to the cartridge via the picker robot In an optical disk based archive system,
Wherein the picker robot moves the optical disc from the cartridge or disc drive to the center of the picker robot and moves the optical disc from the center of the picker robot to the disc drive or the cartridge, Providing a space for holding an optical disc,
The picker robot includes a kicker arm for pulling out the optical disk from the cartridge; First and second solenoid assemblies including at least one solenoid for dragging or pushing an optical disc drawn into the body; And first and second solenoid conveyance parts for moving the first and second solenoid assemblies,
Wherein the first solenoid assembly includes a light emitting array including a plurality of light emitting elements and the second solenoid assembly includes a light receiving array including a plurality of light receiving elements disposed at positions corresponding to the light emitting elements, Wherein the controller is configured to move in synchronization with the first solenoid assembly and receive the light emitted by the light emitting array through the light receiving array, And acquires the location information of the optical disc. The method according to claim 1,
Wherein the light emitting array and the light receiving array are arranged in a straight line in a first direction in which the solenoid assembly moves and in a third direction perpendicular to a second direction in which the picker robot moves. 3. The method of claim 2,
Wherein the solenoid assembly includes two solenoids arranged in a direction in which the solenoid assembly moves, and the light emitting array and the light receiving array are disposed between the two solenoids with respect to the first direction. system. 3. The method of claim 2,
Wherein the solenoid assembly includes two solenoids arranged in a direction in which the solenoid assembly moves, the first solenoid assembly includes a first light emitting array and a second light emitting array or a first light emitting array and a second light receiving array, 2 < / RTI > solenoid assembly comprises a first light receiving array and a second light receiving array or a first light receiving array and a second light emitting array. 3. The method of claim 2,
Wherein the light emitting array and the light receiving array are disposed within a range from the outer periphery of the center hole of the optical disk drawn into the body with respect to the third direction to the edge of the optical disk. The method according to claim 1,
And a shielding means having a hole at a position corresponding to the plurality of light receiving elements is disposed on the front surface of the light receiving array. The method according to claim 1,
Wherein the control unit controls the first and second solenoid conveying units to move the first and second solenoid assemblies toward the slot in which the optical disk is received when the optical disk enters the body of the picker robot, And the position of the optical disk is detected through the light receiving array. 8. The method of claim 7,
The control unit calculates the position of the center hole of the optical disk and controls the solenoid conveyance unit to move the solenoid assembly so that a solenoid in the solenoid assembly close to the slot in which the optical disk is received aligns with the center hole Optical disk-based archive system. The method according to claim 1,
When the optical disk in the body of the picker robot is ejected to the disk drive or the cartridge, the controller turns on the solenoid near the slot from which the optical disk is to be ejected from the solenoid assembly close to the optical disk, So that the first and second solenoid assemblies move in a direction in which the first and second solenoid assemblies are to eject the optical disc, and the solenoids The first and second solenoid assemblies are moved in a direction opposite to a direction in which the first and second solenoid assemblies are to eject the optical disc, while the first and second solenoid transporting units are controlled so that the end portions do not contact the optical disc, Detects the position of said first When the second solenoid assembly moves to the outer edge of the optical disc, the solenoid is turned on so that the end portion protrudes so as to interfere with the optical disc, and the first and second solenoid transporting portions are controlled by the first and second solenoid transporting portions, 2 solenoid assembly moves in a direction in which the optical disk is to be ejected, and the end portion pushes the optical disk so that the optical disk moves out of the body. The method according to claim 1,
Wherein the solenoid conveying unit includes a step motor, a gear, a screw, and a guide, and the controller recognizes the position of the solenoid assembly through the number of steps applied to the step motor.
KR20130114090A 2013-09-25 2013-09-25 Archive system using optical disc KR20150034033A (en)

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